Hot-air drum



(No Model.)

B. T.WHITING. HOT-AIR DRUM.

No. 442,846. Patented Dec 16, 189 0.

2X? 'm 6 I 344m EZRA T. \VHITING, OF DARTFORD, VISOONSIN.

HOT-AIR DRUM.

SPECIFICATION forming part of Letters Patent No. 442,846, dated December16, 1890.

' Application filed January 3, 1890. Serial No. 335,783. (No model.)

To all whom it may concern:

Be it known that I, EZRA T. VVHITING, of Dartford,in the county of GreenLake,and in the State of Visconsin, have invented certain new and usefulImprovements in Hot-Air Drums; and I do hereby declare that thefollowing is a full, clear, and exact description thereof.

My invention relates to hot-air drums; and it consists in certainpeculiarities of construction, as will be fully set forth hereinafterand subsequently claimed.

In the drawings, Figure 1 is a vertical section, partly in brokenelevation, of my improved device. Fig. 2 is a horizontal section on theline 2 2 of Fig. 1.

A represents the lower chamber, and B the upper chamber, the latterbeing preferably made detachable, and both shown in the preferred formherein illustrated as being partly conical for greater ease in cleansingthem when necessary. Each chamber has a central pipe-section (marked aand 1), respectively) for connection with the sections of any ordinarystove-pipe, the latter being indicated in dotted lines, and in linetherewith the under plate of the chamber B and upper plate of thechamber A are permanently united by the central pipe C, which latter isprovided with a damper D, another and similar damper E in the upperpipe-section b, the said dampers having convenient rods or handles (Z c,as shown. The chambers A B are further connected by a series of pipes cc 0, arranged around the central pipe C, there being other pipes F F Fwithin the said pipes c c and extending entirely through the lowerchamber A, and preferably, also, terminating within the upperchamber Bjust above the lower plate thereof. This plate B has an exteriorvertical flange g rising to about the same height as that of the saidpipes F, the upper part of said chamber B having a correspondingdownward flange 71, adapted to just fit over said flange g, as shown inFig. 1. A series of short pipesections fff extend through the said upperpart of said chamber and down below said vertical flange h, and are of adiameter just a trifle larger than the pipes F, as shown, or, ifpreferred, smaller than the diameter of the said pipes F, so as tosnugly fit either outside or inside said latter pipes and make a tightjoint therewith within the said pipes 0.

By constructing the upper chamber B in two parts ready and convenientaccess is afforded to the interior of the drum for removing soot andother accumulations therefrom, and also for inserting and removing thevarious interior pipes or flues, as circumstances may require. It Willthus be seen that when my device is put together the pipes F and theircontinuations f form continuous pipesections through the upper and lowerchain bers of the drum and intermediate pipes c and are open at eachend,while the central pipeC forms an open connection (subject to thecontrol of the damper D) between the said upper and lower chambers,whichlatter are similarly connected by the open pipes c c c.

- The chamber A is preferably provided wit-h braces i i t', permanentlyfastened (as by rivets) to the pipe-section a and the upper plate ofsaid chamber, and the pipe-section b has similar braces j j j, which areriveted or otherwise fastened to the upper pipe-section 1), but whoselower ends merely rest upon the lower plate of the upper chamber 13 tostrengthen the same and yet permit of the ready removal of the upperpart of said chamber.

If desired, the upper and lower parts of the upper chamber B may, likethose of the lower chamber A, be permanently secured together, in whichcase the pipes F would of course extend entirely through both chambers,and the said chambers need not be conical; but ordinarily I prefer theconstruction illustrated and described.

The operation of my device will be readily understood from the foregoingdescription of its construction. To secure a circulation of the smokeand other products of combustion through my device, it is onlynecessary, when it is placed on a stove-pipe, to close the damper D,when the smoke and hot gases will pass first through the pi pe-section ainto the lower chamber A, and thence through the pipes c c 0 into theupper chamber B, and then pass up and out through the pipe-section b.The cool air in the room is thus drawn up through the pipes F and outthrough the upper ends of said pipes (or their extensions f into theroom, being heated in such passage by the said smoke and hot gases inthe pipes c. The upper damper E may be turned as desired to regulatethis circulation, or both dampers may be opened to permit the said smokeand gases to pass directly up and out through the central pipe (1 andpipe-sections a Z) and stove pipe in line therewith whenever it is notdesired to utilize the drum for heating purposes.

llavin g thus described my invention, what I claim as new, and desire tosecure by Letters Patent, is

An improved hot'air drum comprising an upper and a lower chamber havingtop and bottom plates or portions and central openings in their top andbottom, respectively, for the usual smoke-flue, said upper chamber beingconstructed with a removable top section, a central smoke-fiue openingat its lower end into the upper part of the lower chamber and at' itsupper end into the lower part of the upper chamber, a number ofauxiliary smokeflucs arranged around the said central smoketlueandopening at theirloweland uppereuds, respectively, into the upper part ofthe lower chamber and the lower part of the upper chamber, airheatingpipes inclosed in the auxiliary flues and extending completely throughthe lower and upper chambers and open at their upper and lower ends,braces 1 in the lower chamber rigidly secured at their up: per and lowerends and located between the fines, the braces j in the upper chamberpermanently secured to the pipe-extension and resting on the bottom ofthe upper chamber between the flues, and dampers for regulating thedraft, substantially as described.

In testimony that I claim the foregoing I V have hereunto set my hand,at Milwaukee, in the county of Milwaukee and State of, \Yisconsin, inthe presence of two witnesses.

' EZRA T. XVHITING. Titnesses; l i H) G. UND RwooD, WM. KLUG.

